layers-actions.c 18 KB
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/* The GIMP -- an image manipulation program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#include "config.h"

#include <gtk/gtk.h>

#include "libgimpwidgets/gimpwidgets.h"

#include "actions-types.h"

#include "core/gimpimage.h"
#include "core/gimplayer.h"
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#include "core/gimplayermask.h"
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#include "core/gimplist.h"

#include "text/gimptextlayer.h"

#include "widgets/gimphelp-ids.h"
#include "widgets/gimpactiongroup.h"

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#include "actions.h"
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#include "image-commands.h"
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#include "layers-actions.h"
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#include "layers-commands.h"
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#include "gimp-intl.h"


static GimpActionEntry layers_actions[] =
{
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  { "layers-popup", GIMP_STOCK_LAYERS, N_("Layers Menu"), NULL, NULL, NULL,
    GIMP_HELP_LAYER_DIALOG },
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  { "layers-menu",              NULL,                    N_("_Layer")        },
  { "layers-stack-menu",        NULL,                    N_("Stac_k")        },
  { "layers-colors-menu",       NULL,                    N_("_Colors")       },
  { "layers-colors-auto-menu",  NULL,                    N_("_Auto")         },
  { "layers-mask-menu",         NULL,                    N_("_Mask")         },
  { "layers-transparency-menu", NULL,                    N_("Tr_ansparency") },
  { "layers-transform-menu",    NULL,                    N_("_Transform")    },
  { "layers-properties-menu",   NULL,                    N_("_Properties")   },
  { "layers-opacity-menu",      GIMP_STOCK_TRANSPARENCY, N_("_Opacity")      },
  { "layers-mode-menu",         GIMP_STOCK_TOOL_PENCIL,  N_("Layer _Mode")   },
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  { "layers-text-tool", GIMP_STOCK_TOOL_TEXT,
    N_("Te_xt Tool"), NULL, NULL,
    G_CALLBACK (layers_text_tool_cmd_callback),
    GIMP_HELP_TOOL_TEXT },

  { "layers-edit-attributes", GIMP_STOCK_EDIT,
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    N_("_Edit Layer Attributes..."), NULL,
    N_("Edit layer attributes"),
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    G_CALLBACK (layers_edit_attributes_cmd_callback),
    GIMP_HELP_LAYER_EDIT },

  { "layers-new", GTK_STOCK_NEW,
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    N_("_New Layer..."), "",
    N_("New layer dialog"),
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    G_CALLBACK (layers_new_cmd_callback),
    GIMP_HELP_LAYER_NEW },

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  { "layers-new-default", GTK_STOCK_NEW,
    N_("_New Layer"), "",
    N_("New layer"),
    G_CALLBACK (layers_new_default_cmd_callback),
    GIMP_HELP_LAYER_NEW },

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  { "layers-duplicate", GIMP_STOCK_DUPLICATE,
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    N_("D_uplicate Layer"), NULL,
    N_("Duplicate layer"),
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    G_CALLBACK (layers_duplicate_cmd_callback),
    GIMP_HELP_LAYER_DUPLICATE },

  { "layers-delete", GTK_STOCK_DELETE,
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    N_("_Delete Layer"), "",
    N_("Delete layer"),
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    G_CALLBACK (layers_delete_cmd_callback),
    GIMP_HELP_LAYER_DELETE },

  { "layers-raise", GTK_STOCK_GO_UP,
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    N_("_Raise Layer"), "",
    N_("Raise layer"),
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    G_CALLBACK (layers_raise_cmd_callback),
    GIMP_HELP_LAYER_RAISE },

  { "layers-raise-to-top", GTK_STOCK_GOTO_TOP,
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    N_("Layer to _Top"), "",
    N_("Raise layer to top"),
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    G_CALLBACK (layers_raise_to_top_cmd_callback),
    GIMP_HELP_LAYER_RAISE_TO_TOP },

  { "layers-lower", GTK_STOCK_GO_DOWN,
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    N_("_Lower Layer"), "",
    N_("Lower layer"),
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    G_CALLBACK (layers_lower_cmd_callback),
    GIMP_HELP_LAYER_LOWER },

  { "layers-lower-to-bottom", GTK_STOCK_GOTO_BOTTOM,
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    N_("Layer to _Bottom"), "",
    N_("Lower layer to bottom"),
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    G_CALLBACK (layers_lower_to_bottom_cmd_callback),
    GIMP_HELP_LAYER_LOWER_TO_BOTTOM },

  { "layers-anchor", GIMP_STOCK_ANCHOR,
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    N_("_Anchor Layer"), NULL,
    N_("Anchor floating layer"),
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    G_CALLBACK (layers_anchor_cmd_callback),
    GIMP_HELP_LAYER_ANCHOR },

  { "layers-merge-down", GIMP_STOCK_MERGE_DOWN,
    N_("Merge Do_wn"), NULL, NULL,
    G_CALLBACK (layers_merge_down_cmd_callback),
    GIMP_HELP_LAYER_MERGE_DOWN },

  { "layers-merge-layers", NULL,
    N_("Merge _Visible Layers..."), NULL, NULL,
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    G_CALLBACK (image_merge_layers_cmd_callback),
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    GIMP_HELP_IMAGE_MERGE_LAYERS },

  { "layers-flatten-image", NULL,
    N_("_Flatten Image"), NULL, NULL,
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    G_CALLBACK (image_flatten_image_cmd_callback),
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    GIMP_HELP_IMAGE_FLATTEN },

  { "layers-text-discard", GIMP_STOCK_TOOL_TEXT,
    N_("_Discard Text Information"), NULL, NULL,
    G_CALLBACK (layers_text_discard_cmd_callback),
    GIMP_HELP_LAYER_TEXT_DISCARD },

  { "layers-resize", GIMP_STOCK_RESIZE,
    N_("Layer B_oundary Size..."), NULL, NULL,
    G_CALLBACK (layers_resize_cmd_callback),
    GIMP_HELP_LAYER_RESIZE },

  { "layers-resize-to-image", GIMP_STOCK_LAYER_TO_IMAGESIZE,
    N_("Layer to _Image Size"), NULL, NULL,
    G_CALLBACK (layers_resize_to_image_cmd_callback),
    GIMP_HELP_LAYER_RESIZE_TO_IMAGE },

  { "layers-scale", GIMP_STOCK_SCALE,
    N_("_Scale Layer..."), NULL, NULL,
    G_CALLBACK (layers_scale_cmd_callback),
    GIMP_HELP_LAYER_SCALE },

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  { "layers-crop", GIMP_STOCK_TOOL_CROP,
    N_("Cr_op Layer"), NULL, NULL,
    G_CALLBACK (layers_crop_cmd_callback),
    GIMP_HELP_LAYER_CROP },

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  { "layers-mask-add", GIMP_STOCK_LAYER_MASK,
    N_("Add La_yer Mask..."), NULL, NULL,
    G_CALLBACK (layers_mask_add_cmd_callback),
    GIMP_HELP_LAYER_MASK_ADD },

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  { "layers-alpha-add", GIMP_STOCK_TRANSPARENCY,
    N_("Add Alpha C_hannel"), NULL, NULL,
    G_CALLBACK (layers_alpha_add_cmd_callback),
    GIMP_HELP_LAYER_ALPHA_ADD }
};

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static GimpToggleActionEntry layers_toggle_actions[] =
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{
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  { "layers-preserve-transparency", GIMP_STOCK_TRANSPARENCY,
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    N_("Keep Transparency"), NULL, NULL,
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    G_CALLBACK (layers_preserve_trans_cmd_callback),
    FALSE,
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    GIMP_HELP_LAYER_KEEP_TRANSPARENCY },
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  { "layers-mask-edit", GIMP_STOCK_EDIT,
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    N_("Edit Layer Mask"), NULL, NULL,
    G_CALLBACK (layers_mask_edit_cmd_callback),
    FALSE,
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    GIMP_HELP_LAYER_MASK_EDIT },
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  { "layers-mask-show", GIMP_STOCK_VISIBLE,
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    N_("Show Layer Mask"), NULL, NULL,
    G_CALLBACK (layers_mask_show_cmd_callback),
    FALSE,
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    GIMP_HELP_LAYER_MASK_SHOW },
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  { "layers-mask-disable", NULL,
    N_("Disable Layer Mask"), NULL, NULL,
    G_CALLBACK (layers_mask_disable_cmd_callback),
    FALSE,
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    GIMP_HELP_LAYER_MASK_DISABLE }
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};

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static GimpEnumActionEntry layers_mask_apply_actions[] =
{
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  { "layers-mask-apply", NULL,
    N_("Apply Layer _Mask"), NULL, NULL,
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    GIMP_MASK_APPLY,
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    GIMP_HELP_LAYER_MASK_APPLY },

  { "layers-mask-delete", GTK_STOCK_DELETE,
    N_("Delete Layer Mas_k"), "", NULL,
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    GIMP_MASK_DISCARD,
    GIMP_HELP_LAYER_MASK_DELETE }
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};

static GimpEnumActionEntry layers_mask_to_selection_actions[] =
{
  { "layers-mask-selection-replace", GIMP_STOCK_SELECTION_REPLACE,
    N_("_Mask to Selection"), NULL, NULL,
    GIMP_CHANNEL_OP_REPLACE,
    GIMP_HELP_LAYER_MASK_SELECTION_REPLACE },

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  { "layers-mask-selection-add", GIMP_STOCK_SELECTION_ADD,
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    N_("_Add to Selection"), NULL, NULL,
    GIMP_CHANNEL_OP_ADD,
    GIMP_HELP_LAYER_MASK_SELECTION_ADD },

  { "layers-mask-selection-subtract", GIMP_STOCK_SELECTION_SUBTRACT,
    N_("_Subtract from Selection"), NULL, NULL,
    GIMP_CHANNEL_OP_SUBTRACT,
    GIMP_HELP_LAYER_MASK_SELECTION_SUBTRACT },

  { "layers-mask-selection-intersect", GIMP_STOCK_SELECTION_INTERSECT,
    N_("_Intersect with Selection"), NULL, NULL,
    GIMP_CHANNEL_OP_INTERSECT,
    GIMP_HELP_LAYER_MASK_SELECTION_INTERSECT }
};

static GimpEnumActionEntry layers_alpha_to_selection_actions[] =
{
  { "layers-alpha-selection-replace", GIMP_STOCK_SELECTION_REPLACE,
    N_("Al_pha to Selection"), NULL, NULL,
    GIMP_CHANNEL_OP_REPLACE,
    GIMP_HELP_LAYER_ALPHA_SELECTION_REPLACE },

  { "layers-alpha-selection-add", GIMP_STOCK_SELECTION_ADD,
    N_("A_dd to Selection"), NULL, NULL,
    GIMP_CHANNEL_OP_ADD,
    GIMP_HELP_LAYER_ALPHA_SELECTION_ADD },

  { "layers-alpha-selection-subtract", GIMP_STOCK_SELECTION_SUBTRACT,
    N_("_Subtract from Selection"), NULL, NULL,
    GIMP_CHANNEL_OP_SUBTRACT,
    GIMP_HELP_LAYER_ALPHA_SELECTION_SUBTRACT },

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  { "layers-alpha-selection-intersect", GIMP_STOCK_SELECTION_INTERSECT,
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    N_("_Intersect with Selection"), NULL, NULL,
    GIMP_CHANNEL_OP_INTERSECT,
    GIMP_HELP_LAYER_ALPHA_SELECTION_INTERSECT }
};

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static GimpEnumActionEntry layers_select_actions[] =
{
  { "layers-select-top", NULL,
    N_("Select _Top Layer"), "Home", NULL,
    GIMP_ACTION_SELECT_FIRST,
    GIMP_HELP_LAYER_TOP },

  { "layers-select-bottom", NULL,
    N_("Select _Bottom Layer"), "End", NULL,
    GIMP_ACTION_SELECT_LAST,
    GIMP_HELP_LAYER_BOTTOM },

  { "layers-select-previous", NULL,
    N_("Select _Previous Layer"), "Prior", NULL,
    GIMP_ACTION_SELECT_PREVIOUS,
    GIMP_HELP_LAYER_PREVIOUS },

  { "layers-select-next", NULL,
    N_("Select _Next Layer"), "Next", NULL,
    GIMP_ACTION_SELECT_NEXT,
    GIMP_HELP_LAYER_NEXT }
};

static GimpEnumActionEntry layers_opacity_actions[] =
{
  { "layers-opacity-set", GIMP_STOCK_TRANSPARENCY,
    N_("Set Opacity"), NULL, NULL,
    GIMP_ACTION_SELECT_SET,
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    GIMP_HELP_LAYER_OPACITY },
  { "layers-opacity-transparent", GIMP_STOCK_TRANSPARENCY,
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    "Completely Transparent", NULL, NULL,
    GIMP_ACTION_SELECT_FIRST,
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    GIMP_HELP_LAYER_OPACITY },
  { "layers-opacity-opaque", GIMP_STOCK_TRANSPARENCY,
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    "Completely Opaque", NULL, NULL,
    GIMP_ACTION_SELECT_LAST,
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    GIMP_HELP_LAYER_OPACITY },
  { "layers-opacity-decrease", GIMP_STOCK_TRANSPARENCY,
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    "More Transparent", NULL, NULL,
    GIMP_ACTION_SELECT_PREVIOUS,
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    GIMP_HELP_LAYER_OPACITY },
  { "layers-opacity-increase", GIMP_STOCK_TRANSPARENCY,
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    "More Opaque", NULL, NULL,
    GIMP_ACTION_SELECT_NEXT,
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    GIMP_HELP_LAYER_OPACITY },
  { "layers-opacity-decrease-skip", GIMP_STOCK_TRANSPARENCY,
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    "10% More Transparent", NULL, NULL,
    GIMP_ACTION_SELECT_SKIP_PREVIOUS,
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    GIMP_HELP_LAYER_OPACITY },
  { "layers-opacity-increase-skip", GIMP_STOCK_TRANSPARENCY,
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    "10% More Opaque", NULL, NULL,
    GIMP_ACTION_SELECT_SKIP_NEXT,
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    GIMP_HELP_LAYER_OPACITY }
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};

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static GimpEnumActionEntry layers_mode_actions[] =
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{
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  { "layers-mode-first", GIMP_STOCK_TOOL_PENCIL,
    "First Layer Mode", NULL, NULL,
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    GIMP_ACTION_SELECT_FIRST,
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    GIMP_HELP_LAYER_MODE },
  { "layers-mode-last", GIMP_STOCK_TOOL_PENCIL,
    "Last Layer Mode", NULL, NULL,
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    GIMP_ACTION_SELECT_LAST,
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    GIMP_HELP_LAYER_MODE },
  { "layers-mode-previous", GIMP_STOCK_TOOL_PENCIL,
    "Previous Layer Mode", NULL, NULL,
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    GIMP_ACTION_SELECT_PREVIOUS,
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    GIMP_HELP_LAYER_MODE },
  { "layers-mode-next", GIMP_STOCK_TOOL_PENCIL,
    "Next Layer Mode", NULL, NULL,
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    GIMP_ACTION_SELECT_NEXT,
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    GIMP_HELP_LAYER_MODE }
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};

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void
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layers_actions_setup (GimpActionGroup *group)
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{
  gimp_action_group_add_actions (group,
                                 layers_actions,
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                                 G_N_ELEMENTS (layers_actions));
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  gimp_action_group_add_toggle_actions (group,
                                        layers_toggle_actions,
                                        G_N_ELEMENTS (layers_toggle_actions));

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  gimp_action_group_add_enum_actions (group,
                                      layers_mask_apply_actions,
                                      G_N_ELEMENTS (layers_mask_apply_actions),
                                      G_CALLBACK (layers_mask_apply_cmd_callback));

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  gimp_action_group_add_enum_actions (group,
                                      layers_mask_to_selection_actions,
                                      G_N_ELEMENTS (layers_mask_to_selection_actions),
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                                      G_CALLBACK (layers_mask_to_selection_cmd_callback));
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  gimp_action_group_add_enum_actions (group,
                                      layers_alpha_to_selection_actions,
                                      G_N_ELEMENTS (layers_alpha_to_selection_actions),
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                                      G_CALLBACK (layers_alpha_to_selection_cmd_callback));
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  gimp_action_group_add_enum_actions (group,
                                      layers_select_actions,
                                      G_N_ELEMENTS (layers_select_actions),
                                      G_CALLBACK (layers_select_cmd_callback));
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  gimp_action_group_add_enum_actions (group,
                                      layers_opacity_actions,
                                      G_N_ELEMENTS (layers_opacity_actions),
                                      G_CALLBACK (layers_opacity_cmd_callback));
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  gimp_action_group_add_enum_actions (group,
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                                      layers_mode_actions,
                                      G_N_ELEMENTS (layers_mode_actions),
                                      G_CALLBACK (layers_mode_cmd_callback));
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}

void
layers_actions_update (GimpActionGroup *group,
                       gpointer         data)
{
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  GimpImage     *gimage;
  GimpLayer     *layer      = NULL;
  GimpLayerMask *mask       = FALSE;    /*  layer mask             */
  gboolean       fs         = FALSE;    /*  floating sel           */
  gboolean       ac         = FALSE;    /*  active channel         */
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  gboolean       sel        = FALSE;
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  gboolean       alpha      = FALSE;    /*  alpha channel present  */
  gboolean       indexed    = FALSE;    /*  is indexed             */
  gboolean       preserve   = FALSE;
  gboolean       next_alpha = FALSE;
  gboolean       text_layer = FALSE;
  GList         *next       = NULL;
  GList         *prev       = NULL;
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  gimage = action_data_get_image (data);
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  if (gimage)
    {
      GList *list;

      layer = gimp_image_get_active_layer (gimage);

      if (layer)
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        {
          mask = gimp_layer_get_mask (layer);

          preserve = gimp_layer_get_preserve_trans (layer);
        }
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      fs  = (gimp_image_floating_sel (gimage) != NULL);
      ac  = (gimp_image_get_active_channel (gimage) != NULL);
      sel = ! gimp_channel_is_empty (gimp_image_get_mask (gimage));
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      alpha = layer && gimp_drawable_has_alpha (GIMP_DRAWABLE (layer));

      indexed = (gimp_image_base_type (gimage) == GIMP_INDEXED);

      for (list = GIMP_LIST (gimage->layers)->list;
           list;
           list = g_list_next (list))
        {
          if (layer == (GimpLayer *) list->data)
            {
              prev = g_list_previous (list);
              next = g_list_next (list);
              break;
            }
        }

      if (next)
        next_alpha = gimp_drawable_has_alpha (GIMP_DRAWABLE (next->data));
      else
        next_alpha = FALSE;

      text_layer = (layer &&
                    gimp_drawable_is_text_layer (GIMP_DRAWABLE (layer)));
    }

#define SET_VISIBLE(action,condition) \
        gimp_action_group_set_action_visible (group, action, (condition) != 0)
#define SET_SENSITIVE(action,condition) \
        gimp_action_group_set_action_sensitive (group, action, (condition) != 0)
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#define SET_ACTIVE(action,condition) \
        gimp_action_group_set_action_active (group, action, (condition) != 0)
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  SET_VISIBLE   ("layers-text-tool",       text_layer && !ac);
  SET_SENSITIVE ("layers-edit-attributes", layer && !fs && !ac);

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  SET_SENSITIVE ("layers-new",          gimage);
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  SET_SENSITIVE ("layers-new-default",  gimage);
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  SET_SENSITIVE ("layers-duplicate",    layer && !fs && !ac);
  SET_SENSITIVE ("layers-delete",       layer && !ac);

  SET_SENSITIVE ("layers-select-top",      layer && !fs && !ac && prev);
  SET_SENSITIVE ("layers-select-bottom",   layer && !fs && !ac && next);
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  SET_SENSITIVE ("layers-select-previous", layer && !fs && !ac && prev);
  SET_SENSITIVE ("layers-select-next",     layer && !fs && !ac && next);
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  SET_SENSITIVE ("layers-raise",           layer && !fs && !ac && alpha && prev);
  SET_SENSITIVE ("layers-raise-to-top",    layer && !fs && !ac && alpha && prev);
  SET_SENSITIVE ("layers-lower",           layer && !fs && !ac && next && next_alpha);
  SET_SENSITIVE ("layers-lower-to-bottom", layer && !fs && !ac && next && next_alpha);

  SET_SENSITIVE ("layers-anchor",        layer &&  fs && !ac);
  SET_SENSITIVE ("layers-merge-down",    layer && !fs && !ac && next);
  SET_SENSITIVE ("layers-merge-layers",  layer && !fs && !ac);
  SET_SENSITIVE ("layers-flatten-image", layer && !fs && !ac);
  SET_VISIBLE   ("layers-text-discard",  text_layer && !ac);

  SET_SENSITIVE ("layers-resize",          layer && !ac);
  SET_SENSITIVE ("layers-resize-to-image", layer && !ac);
  SET_SENSITIVE ("layers-scale",           layer && !ac);

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  SET_SENSITIVE ("layers-crop",            layer && sel);

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  SET_SENSITIVE ("layers-alpha-add", layer && !fs && !alpha);

  SET_SENSITIVE ("layers-preserve-transparency", layer);
  SET_ACTIVE    ("layers-preserve-transparency", preserve);

  SET_SENSITIVE ("layers-mask-add",    layer && !fs && !ac && !mask && alpha);
  SET_SENSITIVE ("layers-mask-apply",  layer && !fs && !ac &&  mask);
  SET_SENSITIVE ("layers-mask-delete", layer && !fs && !ac &&  mask);

  SET_SENSITIVE ("layers-mask-edit",    layer && !fs && !ac &&  mask);
  SET_SENSITIVE ("layers-mask-show",    layer && !fs && !ac &&  mask);
  SET_SENSITIVE ("layers-mask-disable", layer && !fs && !ac &&  mask);

  SET_ACTIVE ("layers-mask-edit",    mask && gimp_layer_mask_get_edit (mask));
  SET_ACTIVE ("layers-mask-show",    mask && gimp_layer_mask_get_show (mask));
  SET_ACTIVE ("layers-mask-disable", mask && !gimp_layer_mask_get_apply (mask));
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  SET_SENSITIVE ("layers-mask-selection-replace",   layer && !fs && !ac && mask);
  SET_SENSITIVE ("layers-mask-selection-add",       layer && !fs && !ac && mask);
  SET_SENSITIVE ("layers-mask-selection-subtract",  layer && !fs && !ac && mask);
  SET_SENSITIVE ("layers-mask-selection-intersect", layer && !fs && !ac && mask);
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  SET_SENSITIVE ("layers-alpha-selection-replace",   layer && !fs && !ac);
  SET_SENSITIVE ("layers-alpha-selection-add",       layer && !fs && !ac);
  SET_SENSITIVE ("layers-alpha-selection-subtract",  layer && !fs && !ac);
  SET_SENSITIVE ("layers-alpha-selection-intersect", layer && !fs && !ac);

#undef SET_VISIBLE
#undef SET_SENSITIVE
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#undef SET_ACTIVE
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}